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To learn more about Apple Product Security, see the [Apple Product Security](<https://www.apple.com/support/security/>) website.\n\nFor information about the Apple Product Security PGP Key, see [How to use the Apple Product Security PGP Key](<https://support.apple.com/kb/HT201601>).\n\nWhere possible, [CVE IDs](<http://cve.mitre.org/about/>) are used to reference the vulnerabilities for further information.\n\nTo learn about other security updates, see [Apple security updates](<https://support.apple.com/kb/HT201222>).\n\n## OS X El Capitan 10.11.4 and Security Update 2016-002\n\n * **apache_mod_php**\n\nAvailable for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted .png file may lead to arbitrary code execution\n\nDescription: Multiple vulnerabilities existed in libpng versions prior to 1.6.20. These were addressed by updating libpng to version 1.6.20.\n\nCVE-ID\n\nCVE-2015-8126 : Adam Mari\u0161\n\nCVE-2015-8472 : Adam Mari\u0161\n\n * **AppleRAID**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A memory corruption issue was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1733 : Proteas of Qihoo 360 Nirvan Team\n\n * **AppleRAID**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A local user may be able to determine kernel memory layout\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1732 : Proteas of Qihoo 360 Nirvan Team\n\n * **AppleUSBNetworking**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A USB device may be able to cause a denial of service\n\nDescription: An error handling issue existed in packet validation. This issue was addressed through improved error handling.\n\nCVE-ID\n\nCVE-2016-1734 : Andrea Barisani and Andrej Rosano of Inverse Path\n\n * **Bluetooth**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1735 : Jeonghoon Shin@A.D.D\n\nCVE-2016-1736 : beist and ABH of BoB\n\n * **Carbon**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted .dfont file may lead to arbitrary code execution\n\nDescription: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.\n\nCVE-ID\n\nCVE-2016-1737 : HappilyCoded (ant4g0nist &amp;r3dsm0k3)\n\n * **dyld**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An attacker may tamper with code-signed applications to execute arbitrary code in the application's context\n\nDescription: A code signing verification issue existed in dyld. This issue was addressed with improved validation.\n\nCVE-ID\n\nCVE-2016-1738 : beist and ABH of BoB\n\n * **FontParser**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution\n\nDescription: A memory corruption issue was addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1740 : HappilyCoded (ant4g0nist and r3dsm0k3) working with Trend Micro's Zero Day Initiative (ZDI)\n\n * **HTTPProtocol**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A remote attacker may be able to execute arbitrary code\n\nDescription: Multiple vulnerabilities existed in nghttp2 versions prior to 1.6.0, the most serious of which may have led to remote code execution. These were addressed by updating nghttp2 to version 1.6.0.\n\nCVE-ID\n\nCVE-2015-8659\n\n * **Intel Graphics Driver**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1743 : Piotr Bania of Cisco Talos\n\nCVE-2016-1744 : Ian Beer of Google Project Zero\n\n * **IOFireWireFamily**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A local user may be able to cause a denial of service\n\nDescription: A null pointer dereference was addressed through improved validation.\n\nCVE-ID\n\nCVE-2016-1745 : sweetchip of Grayhash\n\n * **IOGraphics**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A memory corruption issue was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1746 : Peter Pi of Trend Micro working with Trend Micro's Zero Day Initiative (ZDI)\n\nCVE-2016-1747 : Juwei Lin of Trend Micro working with Trend Micro's Zero Day Initiative (ZDI)\n\n * **IOHIDFamily**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to determine kernel memory layout\n\nDescription: A memory corruption issue was addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1748 : Brandon Azad\n\n * **IOUSBFamily**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1749 : Ian Beer of Google Project Zero and Juwei Lin of Trend Micro working with Trend Micro's Zero Day Initiative (ZDI)\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A use after free issue was addressed through improved memory management.\n\nCVE-ID\n\nCVE-2016-1750 : CESG\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A race condition existed during the creation of new processes. This was addressed through improved state handling.\n\nCVE-ID\n\nCVE-2016-1757 : Ian Beer of Google Project Zero and Pedro Vila\u00e7a\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A null pointer dereference was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1756 : Lufeng Li of Qihoo 360 Vulcan Team\n\n * **Kernel**\n\nAvailable for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1754 : Lufeng Li of Qihoo 360 Vulcan Team\n\nCVE-2016-1755 : Ian Beer of Google Project Zero\n\nCVE-2016-1759 : lokihardt\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to determine kernel memory layout\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1758 : Brandon Azad\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple integer overflows were addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1753 : Juwei Lin Trend Micro working with Trend Micro's Zero Day Initiative (ZDI)\n\n * **Kernel**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to cause a denial of service\n\nDescription: A denial of service issue was addressed through improved validation.\n\nCVE-ID\n\nCVE-2016-1752 : CESG\n\n * **libxml2**\n\nAvailable for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing maliciously crafted XML may lead to unexpected application termination or arbitrary code execution\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2015-1819\n\nCVE-2015-5312 : David Drysdale of Google\n\nCVE-2015-7499\n\nCVE-2015-7500 : Kostya Serebryany of Google\n\nCVE-2015-7942 : Kostya Serebryany of Google\n\nCVE-2015-8035 : gustavo.grieco\n\nCVE-2015-8242 : Hugh Davenport\n\nCVE-2016-1761 : wol0xff working with Trend Micro's Zero Day Initiative (ZDI)\n\nCVE-2016-1762\n\n * **Messages**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Clicking a JavaScript link can reveal sensitive user information\n\nDescription: An issue existed in the processing of JavaScript links. This issue was addressed through improved content security policy checks.\n\nCVE-ID\n\nCVE-2016-1764 : Matthew Bryant of the Uber Security Team (formerly of Bishop Fox), Joe DeMesy and Shubham Shah of Bishop Fox\n\n * **Messages**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An attacker who is able to bypass Apple's certificate pinning, intercept TLS connections, inject messages, and record encrypted attachment-type messages may be able to read attachments\n\nDescription: A cryptographic issue was addressed by rejecting duplicate messages on the client.\n\nCVE-ID\n\nCVE-2016-1788 : Christina Garman, Matthew Green, Gabriel Kaptchuk, Ian Miers, and Michael Rushanan of Johns Hopkins University\n\n * **NVIDIA Graphics Drivers**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1741 : Ian Beer of Google Project Zero\n\n * **OpenSSH**\n\nAvailable for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 to v10.11.3\n\nImpact: Connecting to a server may leak sensitive user information, such as a client's private keys\n\nDescription: Roaming, which was on by default in the OpenSSH client, exposed an information leak and a buffer overflow. These issues were addressed by disabling roaming in the client.\n\nCVE-ID\n\nCVE-2016-0777 : Qualys\n\nCVE-2016-0778 : Qualys\n\n * **OpenSSH**\n\nAvailable for: OS X Mavericks v10.9.5 and OS X Yosemite v10.10.5\n\nImpact: Multiple vulnerabilities in LibreSSL\n\nDescription: Multiple vulnerabilities existed in LibreSSL versions prior to 2.1.8. These were addressed by updating LibreSSL to version 2.1.8.\n\nCVE-ID\n\nCVE-2015-5333 : Qualys\n\nCVE-2015-5334 : Qualys\n\n * **OpenSSL**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A memory leak existed in OpenSSL versions prior to 0.9.8zh. This issue was addressed by updating OpenSSL to version 0.9.8zh.\n\nCVE-ID\n\nCVE-2015-3195\n\n * **Python**\n\nAvailable for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted .png file may lead to arbitrary code execution\n\nDescription: Multiple vulnerabilities existed in libpng versions prior to 1.6.20. These were addressed by updating libpng to version 1.6.20.\n\nCVE-ID\n\nCVE-2014-9495\n\nCVE-2015-0973\n\nCVE-2015-8126 : Adam Mari\u0161\n\nCVE-2015-8472 : Adam Mari\u0161\n\n * **QuickTime**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted FlashPix Bitmap Image may lead to unexpected application termination or arbitrary code execution\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1767 : Francis Provencher from COSIG\n\nCVE-2016-1768 : Francis Provencher from COSIG\n\n * **QuickTime**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted Photoshop document may lead to unexpected application termination or arbitrary code execution\n\nDescription: Multiple memory corruption issues were addressed through improved memory handling.\n\nCVE-ID\n\nCVE-2016-1769 : Francis Provencher from COSIG\n\n * **Reminders**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Clicking a tel link can make a call without prompting the user\n\nDescription: A user was not prompted before invoking a call. This was addressed through improved entitlement checks.\n\nCVE-ID\n\nCVE-2016-1770 : Guillaume Ross of Rapid7 and Laurent Chouinard of Laurent.ca\n\n * **Ruby**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A local attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: An unsafe tainted string usage vulnerability existed in versions prior to 2.0.0-p648. This issue was addressed by updating to version 2.0.0-p648.\n\nCVE-ID\n\nCVE-2015-7551\n\n * **Security**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: A local user may be able to check for the existence of arbitrary files\n\nDescription: A permissions issue existed in code signing tools. This was addressed though additional ownership checks.\n\nCVE-ID\n\nCVE-2016-1773 : Mark Mentovai of Google Inc.\n\n * **Security**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted certificate may lead to arbitrary code execution\n\nDescription: A memory corruption issue existed in the ASN.1 decoder. This issue was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1950 : Francis Gabriel of Quarkslab\n\n * **Tcl**\n\nAvailable for: OS X Yosemite v10.10.5 and OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted .png file may lead to arbitrary code execution\n\nDescription: Multiple vulnerabilities existed in libpng versions prior to 1.6.20. These were addressed by removing libpng.\n\nCVE-ID\n\nCVE-2015-8126\n\n * **TrueTypeScaler**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: A memory corruption issue existed in the processing of font files. This issue was addressed through improved input validation.\n\nCVE-ID\n\nCVE-2016-1775 : 0x1byte working with Trend Micro's Zero Day Initiative (ZDI)\n\n * **Wi-Fi**\n\nAvailable for: OS X El Capitan v10.11 to v10.11.3\n\nImpact: An attacker with a privileged network position may be able to execute arbitrary code\n\nDescription: A frame validation and memory corruption issue existed for a given ethertype. This issue was addressed through additional ethertype validation and improved memory handling.\n\nCVE-ID\n\nCVE-2016-0801 : an anonymous researcher\n\nCVE-2016-0802 : an anonymous researcher\n\nOS X El Capitan 10.11.4 includes the security content of [Safari 9.1](<https://support.apple.com/kb/HT206171>).\n", "edition": 2, "modified": "2017-01-23T03:54:34", "published": "2017-01-23T03:54:34", "id": "APPLE:HT206167", "href": "https://support.apple.com/kb/HT206167", "title": "About the security content of OS X El Capitan v10.11.4 and Security Update 2016-002 - Apple Support", "type": "apple", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}]}